Plastic 3 piece airlock. Cylinder lock is a Type of airlock which serves one purpose-to let fermentation gas out and to keep air from reaching the beer or wine. Very durable and easy to clean! remove top and fill to line with sanitizer-solution. Universal car bungs included.
Econo-Lock with Carboy Bung, 8 Locks (3 pcs Each)
Econo-Lock Lets Fermentation Gas Out
Keeps Air From Reaching Beer or Wine
Durable and Easy to Clean